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内容説明
This text discusses the historical development of the engineering discipline of fracture mechanics from early times to the scientific treatment of the subject in the 20th century. The 50 contributors focus on the role of Professor George R. Irwin in converting early ideas of fracture into the clear-cut theory of fracture mechanics， and in showing the engineer the potential of the theory in solving failure cases. The social background of the development of the theory is discussed， along with failure cases and incidents of importance to the history of technology. Most papers do not require a mathematical background to understand them.